EP0806475A3 - Filter apparatus and method of separating micro-tissues of an organism using said filter apparatus - Google Patents

Filter apparatus and method of separating micro-tissues of an organism using said filter apparatus Download PDF

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Publication number
EP0806475A3
EP0806475A3 EP97400715A EP97400715A EP0806475A3 EP 0806475 A3 EP0806475 A3 EP 0806475A3 EP 97400715 A EP97400715 A EP 97400715A EP 97400715 A EP97400715 A EP 97400715A EP 0806475 A3 EP0806475 A3 EP 0806475A3
Authority
EP
European Patent Office
Prior art keywords
filter apparatus
porosity
housing
compressive state
filter member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97400715A
Other languages
German (de)
French (fr)
Other versions
EP0806475B1 (en
EP0806475A2 (en
Inventor
Yoshitaka c/o Terumo Kabushiki Kaisha Ohmura
Noboru c/o Terumo Kabushiki Kaisha Taguchi
Tadashi c/o Terumo Kabushiki Kaisha Sameshima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Publication of EP0806475A2 publication Critical patent/EP0806475A2/en
Publication of EP0806475A3 publication Critical patent/EP0806475A3/en
Application granted granted Critical
Publication of EP0806475B1 publication Critical patent/EP0806475B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1218—Layers having the same chemical composition, but different properties, e.g. pore size, molecular weight or porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
    • A61M1/3633—Blood component filters, e.g. leukocyte filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood
    • G01N33/491—Blood by separating the blood components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/04—Liquids
    • A61M2202/0413—Blood
    • A61M2202/0439—White blood cells; Leucocytes

Abstract

A filter apparatus (1B) is formed by a housing (2), a filter member (5) disposed in the housing (2), flow-passage maintaining members (6a and 6b) disposed on the two sides of the filter member (5), screw thread portions (32) and thread grooves (44) which are a porosity changing unit. The housing (2) is formed by a first housing member (3) having a first port (31) and a second housing member (4) having a second port (41). The filter member (5) is formed by stacking a plurality of porous polymer sheets (51). It is preferable that the porous polymer sheets (51) have gradient of physical or chemical characteristic in a direction of stacking. By operating the porosity changing means, the filter member (5) is set to a compressive state or a non-compressive state. In the compressive state, a first porosity capable of capturing the objective cells is set. In the non-compressive state, a second porosity which is higher than the first porosity is set.
EP97400715A 1996-03-28 1997-03-28 Method of separating cells from blood Expired - Lifetime EP0806475B1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP99199/96 1996-03-28
JP9919996 1996-03-28
JP9919996 1996-03-28
JP26531396 1996-09-13
JP265313/96 1996-09-13
JP26531396 1996-09-13
JP57115/97 1997-02-26
JP5711597 1997-02-26
JP05711597A JP3322595B2 (en) 1996-03-28 1997-02-26 Filter device and method for separating / collecting biological microstructure

Publications (3)

Publication Number Publication Date
EP0806475A2 EP0806475A2 (en) 1997-11-12
EP0806475A3 true EP0806475A3 (en) 2001-01-17
EP0806475B1 EP0806475B1 (en) 2003-05-14

Family

ID=27296151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400715A Expired - Lifetime EP0806475B1 (en) 1996-03-28 1997-03-28 Method of separating cells from blood

Country Status (4)

Country Link
US (1) US6139757A (en)
EP (1) EP0806475B1 (en)
JP (1) JP3322595B2 (en)
DE (1) DE69721893T2 (en)

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US3747769A (en) * 1971-08-02 1973-07-24 R Brumfield Compressible disposable filter press for blood
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WO1995017238A1 (en) * 1993-12-21 1995-06-29 Genera Technologies Limited Filtration method and apparatus
DE19519804A1 (en) * 1995-05-31 1996-12-05 Juergen Dr Schrezenmeir Bioactive capsule has multi-layered sheath of variable porosity

Also Published As

Publication number Publication date
DE69721893D1 (en) 2003-06-18
EP0806475B1 (en) 2003-05-14
EP0806475A2 (en) 1997-11-12
JP3322595B2 (en) 2002-09-09
DE69721893T2 (en) 2004-02-19
US6139757A (en) 2000-10-31
JPH10137557A (en) 1998-05-26

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